Microbial electrolysis cell with spiral wound electrode for wastewater treatment and methane production
Microbial electrolysis cell with spiral wound electrode for wastewater treatment and methane production
复制标题
用于废水处理和甲烷生产的具有螺旋卷绕电极的微生物电解池
DOI：
10.1016/j.procbio.2015.04.001
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发表时间：
2015-07-01
影响因子：
4.4
通讯作者：
Zeng, Jia
中科院分区：
文献类型：
--
作者：
Hou, Yanping;Zhang, Renduo;Zeng, Jia
本研究的目的是建立一个微生物电解池（MEC）构建的螺旋卷绕电极，并评估其对废水的处理和甲烷（CH 4）的生产效率。螺旋缠绕设计可提供大于60 m2/m3的电极比表面积和低内阻。以乙酸盐为底物，当外加电压从0.7 V增加到1.3 V时，平均电流密度从46 A/m3增加到132 A/m3，甲烷产率从0.08 m 3/m3 d增加到0.17 m 3/m3 d。随着外加电压的增加，能量效率从157%下降到69%，而COD去除率从0.31增加到0.69kgCOD/m3·d。螺旋卷绕电极MEC的最佳工作电压为0.95V左右。以乳品废水为原料，MEC的平均电流密度为24 A/m3，甲烷产率为0.03 m3/m3·d，能量效率为66%，COD去除率为0.20 kgCOD/m3·d。(C)2015爱思唯尔有限公司版权所有。
The aim of this study was to develop a microbial electrolysis cell (MEC) constructed with spiral wound electrode and to evaluate its effectiveness for wastewater treatment and methane (CH4) production. The spiral wound design can provide more than 60 m(2)/m(3) of specific surface area of the electrode and low internal resistance. With acetate as the substrate and increasing applied voltages from 0.7 to 1.3 V, the average current density and CH4 production rate increased from 46 to 132 A/m(3) and from 0.08 to 0.17 m(3)/m(3) d, respectively. With the increasing applied voltages, the energy efficiencies decreased from 157% to 69%, while the COD removal rates increased from 0.31 to 0.69 kg COD/m(3)d. The optimal applied voltage of the spiral-wound-electrode MEC was about 0.95V. Fed with dairy wastewater, the MEC also showed good performance with the average current density of 24 A/m(3), CH4 production rate of 0.03 m(3)/m(3) d, energy efficiency of 66%, and COD removal rate of 0.20 kg COD/m(3) d. (C) 2015 Elsevier Ltd. All rights reserved.